From efd34d53a19e5d1436774deffb3fd1733e670b53 Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Sun, 2 Jul 2017 16:02:32 +0000
Subject: Fixed bug #854.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@10298 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 os/hal/ports/STM32/LLD/RTCv2/hal_rtc_lld.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'os/hal/ports/STM32')

diff --git a/os/hal/ports/STM32/LLD/RTCv2/hal_rtc_lld.c b/os/hal/ports/STM32/LLD/RTCv2/hal_rtc_lld.c
index 09844f680..5c42dbc3b 100644
--- a/os/hal/ports/STM32/LLD/RTCv2/hal_rtc_lld.c
+++ b/os/hal/ports/STM32/LLD/RTCv2/hal_rtc_lld.c
@@ -345,9 +345,10 @@ void rtc_lld_set_time(RTCDriver *rtcp, const RTCDateTime *timespec) {
 
   /* Writing the registers.*/
   rtc_enter_init();
-  rtcp->rtc->TR  = tr;
-  rtcp->rtc->DR  = dr;
-  rtcp->rtc->CR |= timespec->dstflag << RTC_CR_BKP_OFFSET;
+  rtcp->rtc->TR = tr;
+  rtcp->rtc->DR = dr;
+  rtcp->rtc->CR = (rtcp->rtc->CR & ~(1U << RTC_CR_BKP_OFFSET)) |
+                  (timespec->dstflag << RTC_CR_BKP_OFFSET);
   rtc_exit_init();
 
   /* Leaving a reentrant critical zone.*/
-- 
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